package string01;

public class Circle {
    private double r;
    public Circle(){
        this.r = 1 ;
    }
    public double getR() {
        return r;
    }
    public void setR(double r){
        this.r = r;
    }
        public double findArea(){
            double s = 3.14 * r * r;
            return s;
    }
}
